A simulation test device for mounting a rotary worm gear box on an aerial work platform on a slope.

Abstract

This invention discloses a simulation test device for mounting a rotary worm gearbox on an aerial work platform on a slope. The device includes a support frame and a rotary worm gearbox mounted on top of the support frame. A worm gearbox mounting plate is screwed onto the top of the support frame. A main shaft is mounted on the inner side of the mounting plate, and two sets of keys are mounted on the outer side of the main shaft. A flange is mounted on the outer side of one set of keys, and a rotary gear ring is mounted on the top of the flange with mounting screws. One side of the rotary gear ring engages with the output wheel shaft of the rotary worm gearbox. A roller is mounted on the outer side of the main shaft and the other set of keys, and fastening screws are provided on the roller. This invention overcomes the shortcomings of existing technologies by using a simulation test method that adds or removes weights and controls the hydraulic pressure and flow of the oil motor to replace the full-vehicle test on the slope of the aerial work platform. It can test the different efficiency of the rotary worm gearbox of the aerial work platform under slope load.

Description

Technical Field

[0001] This invention relates to testing equipment, and more particularly to a simulation testing device for a rotating worm gear box mounted on an aerial work platform on a slope, belonging to the technical field of live-line work vehicles. Background Technology

[0002] Existing aerial work platforms, including those for live-line work, have vertically mounted slewing worm gearboxes. When the entire device rotates, especially when the platform is working on an incline at a certain angle, the slewing worm gearbox must, according to general specifications, operate smoothly on a 5° incline without jamming or causing significant swaying or vibration in the personnel-carrying bucket, thus endangering personnel and equipment safety. The efficiency and stability issues of the slewing worm gearbox system primarily stem from its own system efficiency and stability, particularly for worm gear-driven aerial work platforms operating on inclines. When the boom is fully extended to its maximum radius, the center of mass of the rotating component shifts outward, generating maximum counter-drive torque that drags the rotating component. When the worm gearbox reverses, factors such as changes in the worm wheel friction coefficient, the worm wheel self-locking critical condition, the temperature of the clearance lubrication condition, and the rigidity of the worm gearbox system can easily cause crawling, jamming, abnormal noise, and severe vibration when the worm gearbox is reverse-driven. This requires comprehensive optimization of the worm gearbox design and quality management to solve, especially through product testing to verify and determine the solution. In mass production, product testing is also necessary to monitor product quality. Traditionally, the worm gearbox is only tested for efficiency and stability by installing it on the slewing equipment of an aerial work platform. This presents communication and feedback difficulties for both worm gearbox suppliers and aerial work platform manufacturers, especially in international trade supply chains.

[0003] Therefore, in order to address the above problems, the present invention provides a simulation test device for mounting a rotary worm gear box on an aerial work platform on a slope. Summary of the Invention

[0004] The purpose of this invention is to provide a simulation test device for mounting a rotary worm gearbox on an aerial work platform on a slope, which overcomes the shortcomings of the prior art. It can test the efficiency of the rotary worm gearbox of the aerial work platform under different loads on a slope, as well as the stability of the rotary worm gearbox. The test results are presented in the form of specific load values, noise values, and stable operation, which are data-driven and intuitive.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a simulation test device for mounting a rotary worm gear box on an aerial work platform on a slope, comprising a support and a rotary worm gear box mounted on the support. A worm gear box mounting plate is mounted on the top of the support by screws. A main shaft is mounted on the inner side of the worm gear box mounting plate. Two sets of keys are mounted on the outer side of the main shaft. A flange is mounted on the outer side of one set of keys. A rotary gear ring is mounted on the top of the flange by mounting screws. One side of the rotary gear ring contacts and meshes with the output wheel shaft of the rotary worm gear box. A roller is mounted on the outer side of the main shaft and the other set of keys, and fastening screws are provided on the roller.

[0006] The derrick has fixed pulleys installed on both sides of the top of the derrick, and a connecting pulley installed at the bottom of one side of the derrick. The outer side of the drum is connected to the weight by a steel wire rope, and the steel wire rope passes around the fixed pulley and the connecting pulley.

[0007] Preferably, the upper side of the spindle contacts the worm gear box mounting plate via a bearing, the top of the bearing is fitted with an upper end cover via a washer, and the upper end cover is fixed to the worm gear box mounting plate via fastening bolts, and the bottom of the bearing is fitted with a lower end cover via a washer.

[0008] Preferably, a bushing is installed at the position where the top of the roller contacts the main shaft, and the bushing is fixed by a set screw, and a thrust ball bearing is installed at the bottom of the roller.

[0009] Preferably, a flange bushing is installed at the bottom of the outer side of the main shaft, and the bottom of the flange bushing is bolted to the bracket, with bolt washers provided on the bolts.

[0010] Preferably, a detachable control box is mounted on one side of the bracket.

[0011] Preferably, the outer side of the output wheel shaft is connected to the worm gear box mounting plate via an eccentric ring, and an oil motor is provided on one side of the rotary worm gear box, and the oil motor meshes with the output wheel shaft.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] By replacing the full-vehicle test on the slope with a simulation test method that involves adding or removing weights and controlling the hydraulic pressure and flow of the oil motor, the shortcomings of existing technologies are overcome. This method can test the different efficiencies of the slewing worm gearbox of the aerial work platform under slope load, as well as the stability of the slewing worm gearbox. The test results are presented in a data-driven and intuitive manner with specific load values, noise levels, and operational stability. The slewing worm gearbox is vertically mounted on the worm gearbox mounting plate, allowing for the replacement of gear rings to test different models of slewing worm gearbox products. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall test structure of the present invention;

[0016] Figure 2 This is a top view of the structural support of the present invention;

[0017] Figure 3 This is a schematic diagram of the anatomical structure of the main shaft AA of the present invention;

[0018] Figure 4 This is a schematic diagram of the overall bearing of the present invention.

[0019] Figure 5 This is a schematic diagram of the front structure of the present invention.

[0020] In the diagram: 1. Main shaft; 2. Bracket; 3. Worm gear box mounting plate; 4. Flange bushing; 5. Flange; 6. Roller; 7. Washer; 8. Bearing; 9. Thrust ball bearing; 10. Rotary gear ring; 11. Fastening screw; 12. Control box; 13. Wire rope; 14. Derrick; 15. Weight; 16. Upper end cover; 17. Lower end cover; 18. Connecting pulley; 19. Fixed pulley; 20. Screw; 21. Fastening bolt; 22. Output wheel shaft; 23. Mounting screw; 26. Bolt washer; 27. Bolt; 28. Key; 29. ​​Rotary worm gear box; 30. Bushing; 31. Set screw; 32. Oil motor; 33. Eccentric ring. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-5This invention provides a simulation test device for mounting a rotary worm gear box on an aerial work platform on a slope, comprising a support 2 and a rotary worm gear box 29 mounted on the support 2. A worm gear box mounting plate 3 is mounted on the top of the support 2 by screws 20. A main shaft 1 is mounted on the inner side of the worm gear box mounting plate 3. Two sets of keys 28 are mounted on the outer side of the main shaft 1. A flange 5 is mounted on the outer side of one set of keys 28. A rotary gear ring 10 is mounted on the top of the flange 5 by mounting screws 23. One side of the rotary gear ring 10 contacts and meshes with the output wheel shaft 22 of the rotary worm gear box 29. A roller 6 is mounted on the outer side of the main shaft 1 and the other set of keys 28, and a fastening screw 11 is provided on the roller 6.

[0023] The derrick 14 has fixed pulleys 19 installed on both sides of the top of the derrick 14, and a connecting pulley 18 installed at the bottom of one side of the derrick 14. The outer side of the roller 6 is connected to the weight 15 by a steel wire rope 13, and the steel wire rope 13 passes around the fixed pulley 19 and the connecting pulley 18. Through the design of the derrick 14, the gravitational potential energy of the weight 15 is converted into a pulling force.

[0024] The upper side of the main shaft 1 is in contact with the worm gear box mounting plate 3 through the bearing 8. The top of the bearing 8 is fitted with an upper end cover 16 through a washer 7, and the upper end cover 16 is fixed to the worm gear box mounting plate 3 by fastening bolts 21. The bottom of the bearing 8 is fitted with a lower end cover 17 through a washer 7.

[0025] A bushing 30 is installed at the position where the top of the roller 6 contacts the main shaft 1, and the bushing 30 is fixed by a set screw 31. A thrust ball bearing 9 is installed at the bottom of the roller 6.

[0026] A flange bushing 4 is installed at the bottom of the outer side of the main shaft 1. The bottom of the flange bushing 4 is installed on the bracket 2 by bolts 27, and bolt washers 26 are provided on the bolts 27.

[0027] A detachable control box 12 is installed on one side of the bracket 2.

[0028] The outer side of the output wheel shaft 22 is connected to the worm gear box mounting plate 3 via an eccentric ring 33. A hydraulic motor 32 is provided on one side of the rotary worm gear box 29, and the hydraulic motor 32 meshes with the output wheel shaft 22.

[0029] The worm gear box uses a pair of worm gears for transmission. An oil motor is installed at the worm input port, and an output shaft is output at the worm wheel end. The teeth of the gear shaft mesh with the rotating gear ring 10 as external teeth. The gears mesh with each other to transmit power and motion through mechanical transmission. An eccentric ring 33 is installed between the worm gear box and the worm gear box mounting plate. A main shaft 1 is provided in the middle of the bracket. By adding weights to pull the steel wire 13, the pulling of 13 causes the main shaft 1 to shift, thus simulating the angle load under different gravitational forces.

[0030] In the description of this invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0031] In this invention, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements or an interaction between two elements. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An overhanging vehicle on a slope on the rotary worm gear box simulation test device, including support (2) and installed on the support (2) rotary worm gear box (29), characterized by, The support (2) top is installed with worm wheel box mounting plate (3) through screw (20), the inside of worm wheel box mounting plate (3) is installed with main shaft (1), the outside of main shaft (1) is installed with two groups of keys (28), the outside of one group of keys (28) is installed with flange (5), the top of flange (5) is installed with rotary gear ring (10) through mounting screw (23), one side of rotary gear ring (10) is in contact with the output wheel shaft (22) of rotary worm wheel box (29) and engages, the outside of another group of keys (28) is installed with roller (6) with main shaft (1), and fastening screw (11) is arranged on roller (6); The well frame (14) is installed with fixed pulley (19) on both sides of the top of well frame (14), the bottom of one side of well frame (14) is installed with connecting pulley (18), the outside of roller (6) is connected with weight (15) through steel wire rope (13), and steel wire rope (13) passes through fixed pulley (19) and connecting pulley (18); The upper side of main shaft (1) is in contact with worm wheel box mounting plate (3) through bearing (8), the top of bearing (8) is installed with upper end cover (16) through washer (7), and upper end cover (16) is fixed with worm wheel box mounting plate (3) through fastening bolt (21); The top of roller (6) is installed with shaft sleeve (30) in the position of contact with main shaft (1), and shaft sleeve (30) is fixed through tight screw (31), and the bottom of roller (6) is installed with thrust ball bearing (9); The bottom of the outside of main shaft (1) is installed with flange shaft sleeve (4), the bottom of flange shaft sleeve (4) is installed on support (2) through bolt (27), and bolt (27) is provided with bolt pad (26); The outside of output wheel shaft (22) is connected with worm wheel box mounting plate (3) through eccentric ring (33), one side of rotary worm wheel box (29) is provided with oil motor (32), and oil motor (32) is engaged with output wheel shaft (22).

2. The device for simulating test of rotary worm gear box on aerial work platform on slope according to claim 1, characterized in that: One side of support (2) is installed with detachable control box (12).

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